From a10c4c5e01bdab617eaf3aaac9a96c22ddefa97e Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 26 Sep 2024 14:11:52 -0400
Subject: new helper: import_xattr_name()

common logics for marshalling xattr names.

Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 io_uring/xattr.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

(limited to 'io_uring')

diff --git a/io_uring/xattr.c b/io_uring/xattr.c
index f440121c3984..0b3b871eaa65 100644
--- a/io_uring/xattr.c
+++ b/io_uring/xattr.c
@@ -62,11 +62,8 @@ static int __io_getxattr_prep(struct io_kiocb *req,
 	if (!ix->ctx.kname)
 		return -ENOMEM;
 
-	ret = strncpy_from_user(ix->ctx.kname->name, name,
-				sizeof(ix->ctx.kname->name));
-	if (!ret || ret == sizeof(ix->ctx.kname->name))
-		ret = -ERANGE;
-	if (ret < 0) {
+	ret = import_xattr_name(ix->ctx.kname, name);
+	if (ret) {
 		kfree(ix->ctx.kname);
 		return ret;
 	}
-- 
cgit